Iran agrees to end enrichment of uranium by December 31?

Platform comparison

Market context

Iran publicly agreeing to end all uranium enrichment by 31 December 2026 is still a clear underdog outcome, with the market’s 37% YES implying scepticism that Tehran will cross its long-standing red line. The consensus read is that enrichment remains one of Iran’s main bargaining chips, and recent history cuts against a clean surrender: after the U.S. left the JCPOA in 2018, Iran progressively reduced compliance and in 2020 said it would no longer observe any limit on enrichment[1][2].

That backdrop matters because the market only needs a public pledge, not immediate implementation, so a diplomatic formula could still land if sanctions relief or security guarantees are large enough. Comparable JCPOA-era deals show Iran will accept sharp constraints when the package is attractive, but the post-2018 pattern has been the opposite, with Iran enriching well beyond JCPOA limits and IAEA concern rising as stockpiles and purity increased[1][4][5]. On that framing, the favourite is “No”; the value case for YES is a late-cycle negotiated swap rather than a broad policy reversal.

The main catalysts are bilateral or intermediary-led talks, especially any U.S.-Iran channel via Oman, because enrichment remains the central sticking point in those discussions[5]. Traders should watch for a formal written framework, sanctions-relief language, or any statement from Tehran that distinguishes a temporary pause from a permanent end, since the market rules count a pledge of any duration as YES. Recent reporting on the negotiations has emphasised that Iran has kept enrichment inside the country as a red line, while Washington has reportedly pushed a no-enrichment-on-Iranian-soil model, making surprise compromise the main contrarian angle rather than base case[5].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Iran agrees to end enrichment of uranium by December 31? on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

FAQ

Where can I trade this market with the lowest fees?

On Who Will Win 2026, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

What does it cost to trade on Who Will Win 2026?

Zero. Who Will Win 2026 routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Who Will Win 2026 triggers a quick verification flow that finishes in minutes.